Correlations, quantum entanglement and interference in nanoscopic systems Academic Article

journal

  • Journal of Statistical Mechanics: Theory and Experiment

abstract

  • Several of the most interesting quantum effects can or could be observed in nanoscopic systems. For example, the effect of strong correlations between electrons and of quantum interference can be measured in transport experiments through quantum dots, wires, individual molecules and rings formed by large molecules or arrays of quantum dots. In addition, quantum coherence and entanglement can be clearly observed in quantum corrals. In this paper we present calculations of transport properties through Aharonov-Bohm strongly correlated rings where the characteristic phenomenon of charge-spin separation is clearly observed. Additionally quantum interference effects show up in transport through π-conjugated annulene molecules producing important effects on the conductance for different source-drain configurations, leading to the possibility of an interesting switching effect. Finally, elliptic quantum corrals offer an ideal system to study quantum entanglement due to their focalizing properties. Because of an enhanced interaction between impurities localized at the foci, these systems also show interesting quantum dynamical behaviour and offer a challenging scenario for quantum information experiments.

publication date

  • 2010-11-1

edition

  • 2010

keywords

  • Charge
  • Conductance
  • Configuration
  • Dynamical Behavior
  • Electron
  • Entanglement
  • Experiment
  • Impurities
  • Interaction
  • Interference
  • Molecules
  • Quantum Dots
  • Quantum Effects
  • Quantum Entanglement
  • Quantum Information
  • Quantum Interference
  • Ring
  • Scenarios
  • Transport Properties
  • configurations
  • electrons
  • impurities
  • interactions
  • interference
  • molecules
  • quantum dots
  • rings
  • transport properties
  • wire

International Standard Serial Number (ISSN)

  • 1742-5468